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Rigol MSO5074 vs DHO914s

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Tarloth:

--- Quote from: NE666 on November 29, 2023, 09:12:55 am ---
I have both the MSO5k and the DHO1000.  Sure, the 5k UI now looks a little dated as compared to that of the DHOs but I find it perfectly useable in absolute terms.  I don't perceive any lack of response, not to any significant degree.  And as it has already been said, the physical vertical controls I actually prefer, at least in my workflows.  It could be increased familiarity (I've had the 5k longer) but I actually find the 5k faster to use sometimes. YMMV.  The DHO screen is noticeably brighter, which is welcome but it's also significantly more reflective, so it's a mixed bag.

I initially bought the 5k rather than DHO, since I also am working predominantly in the digital/microcontroller domain.  My rationale being that the best bang for the buck comes from buying features you will benefit from e.g. significantly increased sample rate rather than those you won't e.g. 12-bit resolution.  Unless you're planning to work with small signal levels, the front-end noise argument is moot imho.

Also, you're likely younger than I am and may hence have better eyesight but - I'm glad I went with 9" and 10" screens respectively.  MSO operations with any significant number of channels on a 7" screen would be pushing it I think, at least for me.  You can, of course, always make use of the HDMI output on any of these machines but only if you want a monitor on your workbench too.

I'll add too that the reason I subsequently purchased the DHO was "because I can" and "it was cheap" (40% discount during Black Friday week) rather than needing to make up for any deficiency in the 5k.  It could still find it's way onto an auction site yet.

--- End quote ---

The same on this side, microcontrollers essentially and although lately I never monitor more than 4 or 5 lines at the same time, I perfectly understand what you indicate about the screen and it is one of the strong points of the MSO along with its much better bandwidth.

Now, a very important question, where did you get a 40% discount on DHO?????? THANKS

ebastler:

--- Quote from: Tarloth on November 29, 2023, 03:53:30 pm ---Now, a very important question, where did you get a 40% discount on DHO?????? THANKS

--- End quote ---

Rigol Europe, Rigol North America and their local distributors are offering 40% on the DHO1000 series -- until tomorrow in Europe, apparently until December 4th in North America. Not sure whether you can get the same deal locally; Rigol NA's website says "US and Canada only".

Tarloth:

--- Quote from: Fungus on November 29, 2023, 07:49:27 am ---Doesn't matter for digital. Digital is all about timing and squareness of edges. Sample rate and bandwidth is king.

--- End quote ---

Thanks Fungus!, I understand that digital noise surely does not influence signals of at least 0.7 volts in digital, but how much noise does your unit have on analog the front end? Less than 10mv? Many times I evaluate sensors and when the signal varies slowly I use a very good multimeter and that's it, but sometimes the signal that I need to it process cannot be followed by the multimeter obviously and I need to see it in the oscilloscope, which is why I am concerned about noise. I don't need 12 bits (they are very appreciated of course) and I don't need the noise to be in the microvolts range either, but I would be worried if it is greater than 10mv. In the forums I have read atrocities about the noise in the MSO, I don't know if it is due to malicious people, poor measurement or defective units.

Thanks in advance

Tarloth:

--- Quote from: ebastler on November 29, 2023, 04:03:26 pm ---Rigol Europe, Rigol North America and their local distributors are offering 40% on the DHO1000 series -- until tomorrow in Europe, apparently until December 4th in North America. Not sure whether you can get the same deal locally; Rigol NA's website says "US and Canada only".

--- End quote ---

I will buy in USA today! I'll check that discount right now, thanks!

EDIT: I just saw it, great price, but the DHO1000 series does not have a logic analyzer and I would prefer to integrate it. While it has more bandwidth than the 900 and a larger screen, it lacks a built-in signal generator too. The AWG of the MSO5000 or the DHO900 are not wonderful, especially when compared to higher budget instruments, but they are sufficient for me to evaluate signal adaptation circuits for sensors. It seems to me that the alternative is still the DHO900 or the MSO5074 (hacked of course). Thank you!

Fungus:

--- Quote from: Tarloth on November 29, 2023, 04:06:46 pm ---Thanks Fungus!, I understand that digital noise surely does not influence signals of at least 0.7 volts in digital, but how much noise does your unit have on analog the front end? Less than 10mv?

--- End quote ---

It's not an absolute number, it's more like a percentage. Think of it as thick traces on screen.

How much noise that represents depends on your vertical scale.



There's features to mitigate it but they usually come with conditions, like needing a repeating signal and averaging several copies of it together ("waveform averaging" mode).

As noted earlier though, it's moot for digital work.

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